Connecting The Electrical Wiring; Guidelines When Connecting The Electrical Wiring; Specifications Of Standard Wiring Components; To Connect The Electrical Wiring On The Outdoor Unit - Daikin RXA42A2V1B Installation Manual

4 Installation
4.5

Connecting the electrical wiring

DANGER: RISK OF ELECTROCUTION
WARNING
▪ All wiring MUST be performed by an authorised
electrician and MUST comply with the applicable
legislation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on the site and all electrical
construction MUST
legislation.
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
If the supply cord is damaged, it MUST be replaced by the
manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
WARNING
Do NOT connect the power supply to the indoor unit. This
could result in electrical shock or fire.
WARNING
▪ Do NOT use locally purchased electrical parts inside
the product.
▪ Do NOT branch the power supply for the drain pump,
etc. from the terminal block. This could result in
electrical shock or fire.
WARNING
Keep the interconnection wiring away from copper pipes
without thermal insulation as such pipes will be very hot.
DANGER: RISK OF ELECTROCUTION
Disconnect the power supply for more than 10 minutes,
and measure the voltage at the terminals of main circuit
capacitors or electrical components before servicing. The
voltage MUST be less than 50 V DC before you can touch
electrical components. For the location of the terminals,
see the wiring diagram.
DANGER: RISK OF ELECTROCUTION
All electrical parts (including thermistors) are powered by
the power supply. Do not touch them with bare hands.
g
f
e
d
c
b
a Multimeter (DC voltage range)
b S80 – reversing solenoid valve lead wire
c S20 – electronic expansion valve lead wire
d S40 – thermal overload relay lead wire
Installation manual
10
comply with the applicable
DC+
DC-
a
e S90 – thermistor lead wire
f LED
g S70 – fan motor lead wire
4.5.1 Guidelines when connecting the electrical
wiring
Tightening torques
Item
M4 (X1M)
M4 (earth)
4.5.2 Specifications of standard wiring
components
Component
Power supply cable Voltage
Phase
Frequency
Wire sizes
Interconnection cable
(indoor↔outdoor)
Recommended field fuse
Earth leakage circuit breaker
4.5.3 To connect the electrical wiring on the
outdoor unit
1 Open the wire clamp.
2 Connect the interconnection cable and power supply as follows:
a b
a Interconnection cable
b Power supply cable
c Field fuse
d Earth leakage circuit breaker
e Power supply
f Earth
3 Tighten the terminal screws securely. We recommend using a
Phillips screwdriver.
4 Install the switch box cover.
4.6 Finishing the outdoor unit
installation
4.6.1

To finish the outdoor unit installation

DANGER: RISK OF ELECTROCUTION
▪ Make sure that the system is earthed properly.
▪ Turn off the power supply before servicing.
▪ Install the switch box cover before turning on the power
supply.
1 Insulate and fix the refrigerant piping and interconnection cable
as follows:
Tightening torque (N•m)
1.2~1.3
220~240 V
1~
50 Hz
MUST comply with
applicable legislation
4-core cable ≥1.5 mm² and
applicable for 220~240 V
13 A
MUST comply with
applicable legislation
c d
50Hz
220-240V
f e
RXA42+50A2V1B
R32 split series
3P517827-2 – 2017.12